is one piece episode 970 filler?

Against the advice of his retainers, Oden decided to go to the Flower Capital to confront Orochi. Oden broke into the palace and attempted to attack him, but Semimaru used his Devil Fruit ability to create a barrier protecting Orochi.

Higurashi, who was nearby, revealed that she, too, had a Devil Fruit ability, which allowed her to disguise herself as Sukiyaki and hand the throne to Orochi. The real Sukiyaki never intended to give the throne to Orochi, and did not die from illness like how the news said he did.